// zuidazhi.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

int main(int argc, char* argv[])
{int a,b,c;double d;
scanf("%d %d %d",&a,&b,&c);
if(a>b)
{d=a;}
else{d=b;}
if(d>c)
{d=d;}
else{d=c;}

	printf("%.2lf\n",d);
	return 0;
}

